/**
* Check if given entry is at destination point.
* This function is used to updated the flags of an object with move.obj
* type motion that * has reached its final destination coordinates.
* @param v Pointer to view table entry
*/
void AgiEngine::inDestination(ScreenObjEntry *screenObj) {
if (screenObj->motionType == kMotionMoveObj) {
screenObj->stepSize = screenObj->move_stepSize;
setFlag(screenObj->move_flag, true);
}
screenObj->motionType = kMotionNormal;
if (isEgoView(screenObj))
_game.playerControl = true;
}
/**
* Check if given entry is at destination point.
* This function is used to updated the flags of an object with move.obj
* type motion that * has reached its final destination coordinates.
* @param v Pointer to view table entry
*/
void AgiEngine::inDestination(VtEntry *v) {
if (v->motion == MOTION_MOVE_OBJ) {
v->stepSize = v->parm3;
setflag(v->parm4, true);
}
v->motion = MOTION_NORMAL;
if (isEgoView(v))
_game.playerControl = true;
}
void AgiEngine::motionMoveObj(VtEntry *v) {
v->direction = getDirection(v->xPos, v->yPos, v->parm1, v->parm2, v->stepSize);
// Update V6 if ego
if (isEgoView(v))
_game.vars[vEgoDir] = v->direction;
if (v->direction == 0)
inDestination(v);
}
void AgiEngine::motionMoveObj(ScreenObjEntry *screenObj) {
screenObj->direction = getDirection(screenObj->xPos, screenObj->yPos, screenObj->move_x, screenObj->move_y, screenObj->stepSize);
// Update V6 if ego
if (isEgoView(screenObj))
setVar(VM_VAR_EGO_DIRECTION, screenObj->direction);
if (screenObj->direction == 0)
motionMoveObjStop(screenObj);
}
void AgiEngine::motionWander(VtEntry *v) {
if (v->parm1--) {
if (~v->flags & DIDNT_MOVE)
return;
}
v->direction = _rnd->getRandomNumber(8);
if (isEgoView(v)) {
_game.vars[vEgoDir] = v->direction;
while (v->parm1 < 6) {
v->parm1 = _rnd->getRandomNumber(50); // huh?
}
}
}
void AgiEngine::motionMoveObjStop(ScreenObjEntry *screenObj) {
screenObj->stepSize = screenObj->move_stepSize;
// This check for motionType was only done in AGI3.
// But we use this motion type for mouse movement, so we need to check in any case, otherwise it will cause glitches.
if (screenObj->motionType != kMotionEgo) {
setFlag(screenObj->move_flag, true);
}
screenObj->motionType = kMotionNormal;
if (isEgoView(screenObj)) {
_game.playerControl = true;
setVar(VM_VAR_EGO_DIRECTION, 0);
}
}
void AgiEngine::motionWander(ScreenObjEntry *screenObj) {
uint8 originalWanderCount = screenObj->wander_count;
screenObj->wander_count--;
if ((originalWanderCount == 0) || (screenObj->flags & fDidntMove)) {
screenObj->direction = _rnd->getRandomNumber(8);
if (isEgoView(screenObj)) {
setVar(VM_VAR_EGO_DIRECTION, screenObj->direction);
}
while (screenObj->wander_count < 6) {
screenObj->wander_count = _rnd->getRandomNumber(50); // huh?
}
}
}
void AgiEngine::changePos(VtEntry *v) {
int b, x, y;
int dx[9] = { 0, 0, 1, 1, 1, 0, -1, -1, -1 };
int dy[9] = { 0, -1, -1, 0, 1, 1, 1, 0, -1 };
x = v->xPos;
y = v->yPos;
b = checkBlock(x, y);
x += v->stepSize * dx[v->direction];
y += v->stepSize * dy[v->direction];
if (checkBlock(x, y) == b) {
v->flags &= ~MOTION;
} else {
v->flags |= MOTION;
v->direction = 0;
if (isEgoView(v))
_game.vars[vEgoDir] = 0;
}
}
void AgiEngine::changePos(ScreenObjEntry *screenObj) {
bool insideBlock;
int16 x, y;
int dx[9] = { 0, 0, 1, 1, 1, 0, -1, -1, -1 };
int dy[9] = { 0, -1, -1, 0, 1, 1, 1, 0, -1 };
x = screenObj->xPos;
y = screenObj->yPos;
insideBlock = checkBlock(x, y);
x += screenObj->stepSize * dx[screenObj->direction];
y += screenObj->stepSize * dy[screenObj->direction];
if (checkBlock(x, y) == insideBlock) {
screenObj->flags &= ~fMotion;
} else {
screenObj->flags |= fMotion;
screenObj->direction = 0;
if (isEgoView(screenObj))
setVar(VM_VAR_EGO_DIRECTION, 0);
}
}
/**
* Update position of objects
* This function updates the position of all animated, updating view
* table entries according to its motion type, step size, etc. The
* new position must be valid according to the sprite positioning
* rules, otherwise the previous position will be kept.
*/
void AgiEngine::updatePosition() {
ScreenObjEntry *screenObj;
int x, y, oldX, oldY, border;
setVar(VM_VAR_BORDER_CODE, 0);
setVar(VM_VAR_BORDER_TOUCH_EGO, 0);
setVar(VM_VAR_BORDER_TOUCH_OBJECT, 0);
for (screenObj = _game.screenObjTable; screenObj < &_game.screenObjTable[SCREENOBJECTS_MAX]; screenObj++) {
if ((screenObj->flags & (fAnimated | fUpdate | fDrawn)) != (fAnimated | fUpdate | fDrawn)) {
continue;
}
if (screenObj->stepTimeCount > 1) {
screenObj->stepTimeCount--;
continue;
}
screenObj->stepTimeCount = screenObj->stepTime;
x = oldX = screenObj->xPos;
y = oldY = screenObj->yPos;
// If object has moved, update its position
if (!(screenObj->flags & fUpdatePos)) {
int dx[9] = { 0, 0, 1, 1, 1, 0, -1, -1, -1 };
int dy[9] = { 0, -1, -1, 0, 1, 1, 1, 0, -1 };
x += screenObj->stepSize * dx[screenObj->direction];
y += screenObj->stepSize * dy[screenObj->direction];
}
// Now check if it touched the borders
border = 0;
// Check left/right borders
if (getVersion() == 0x3086) {
// KQ4 interpreter does a different comparison on x
// The interpreter before (2.917) and after that (3.098) don't do them that way
// This difference is required for at least Sarien bug #192
// KQ4: room 135, hen moves from the center of the screen to the left border,
// but it doesn't disappear.
if (x <= 0) {
x = 0;
border = 4;
}
} else {
// regular comparison
if (x < 0) {
x = 0;
border = 4;
}
}
// } else if (v->entry == 0 && x == 0 && v->flags & fAdjEgoXY) { // should not be required
// // Extra test to walk west clicking the mouse
// x = 0;
// border = 4;
if (!border) {
if (x + screenObj->xSize > SCRIPT_WIDTH) {
x = SCRIPT_WIDTH - screenObj->xSize;
border = 2;
}
}
// Check top/bottom borders.
if (y - screenObj->ySize < -1) {
y = screenObj->ySize - 1;
border = 1;
} else if (y > SCRIPT_HEIGHT - 1) {
y = SCRIPT_HEIGHT - 1;
border = 3;
} else if ((!(screenObj->flags & fIgnoreHorizon)) && y <= _game.horizon) {
debugC(4, kDebugLevelSprites, "y = %d, horizon = %d", y, _game.horizon);
y = _game.horizon + 1;
border = 1;
}
// Test new position. rollback if test fails
screenObj->xPos = x;
screenObj->yPos = y;
if (checkCollision(screenObj) || !checkPriority(screenObj)) {
screenObj->xPos = oldX;
screenObj->yPos = oldY;
border = 0;
fixPosition(screenObj->objectNr);
}
if (border) {
if (isEgoView(screenObj)) {
setVar(VM_VAR_BORDER_TOUCH_EGO, border);
} else {
setVar(VM_VAR_BORDER_CODE, screenObj->objectNr);
setVar(VM_VAR_BORDER_TOUCH_OBJECT, border);
}
if (screenObj->motionType == kMotionMoveObj) {
motionMoveObjStop(screenObj);
}
}
screenObj->flags &= ~fUpdatePos;
}
}
/**
* Update position of objects
* This function updates the position of all animated, updating view
* table entries according to its motion type, step size, etc. The
* new position must be valid according to the sprite positioning
* rules, otherwise the previous position will be kept.
*/
void AgiEngine::updatePosition() {
VtEntry *v;
int x, y, oldX, oldY, border;
_game.vars[vBorderCode] = 0;
_game.vars[vBorderTouchEgo] = 0;
_game.vars[vBorderTouchObj] = 0;
for (v = _game.viewTable; v < &_game.viewTable[MAX_VIEWTABLE]; v++) {
if ((v->flags & (ANIMATED | UPDATE | DRAWN)) != (ANIMATED | UPDATE | DRAWN)) {
continue;
}
if (v->stepTimeCount != 0) {
if (--v->stepTimeCount != 0)
continue;
}
v->stepTimeCount = v->stepTime;
x = oldX = v->xPos;
y = oldY = v->yPos;
// If object has moved, update its position
if (~v->flags & UPDATE_POS) {
int dx[9] = { 0, 0, 1, 1, 1, 0, -1, -1, -1 };
int dy[9] = { 0, -1, -1, 0, 1, 1, 1, 0, -1 };
x += v->stepSize * dx[v->direction];
y += v->stepSize * dy[v->direction];
}
// Now check if it touched the borders
border = 0;
// Check left/right borders
if (x < 0) {
x = 0;
border = 4;
} else if (x <= 0 && getVersion() == 0x3086) { // KQ4
x = 0; // See Sarien bug #590462
border = 4;
} else if (v->entry == 0 && x == 0 && v->flags & ADJ_EGO_XY) {
// Extra test to walk west clicking the mouse
x = 0;
border = 4;
} else if (x + v->xSize > _WIDTH) {
x = _WIDTH - v->xSize;
border = 2;
}
// Check top/bottom borders.
if (y - v->ySize + 1 < 0) {
y = v->ySize - 1;
border = 1;
} else if (y > _HEIGHT - 1) {
y = _HEIGHT - 1;
border = 3;
} else if ((~v->flags & IGNORE_HORIZON) && y <= _game.horizon) {
debugC(4, kDebugLevelSprites, "y = %d, horizon = %d", y, _game.horizon);
y = _game.horizon + 1;
border = 1;
}
// Test new position. rollback if test fails
v->xPos = x;
v->yPos = y;
if (checkCollision(v) || !checkPriority(v)) {
v->xPos = oldX;
v->yPos = oldY;
border = 0;
fixPosition(v->entry);
}
if (border != 0) {
if (isEgoView(v)) {
_game.vars[vBorderTouchEgo] = border;
} else {
_game.vars[vBorderCode] = v->entry;
_game.vars[vBorderTouchObj] = border;
}
if (v->motion == MOTION_MOVE_OBJ) {
inDestination(v);
}
}
v->flags &= ~UPDATE_POS;
}
}
